明(míng )朝中期,一场贡墨(mò )案(àn )打破维持已久的徽(huī )州墨业格局,位居龙(lóng )头多年的百年制墨(mò )世家李墨没落,李墨(mò )八房被除族。时光流(liú )转,八房幺女李祯(杨紫 饰(shì ))为解决生计毅然(rán )走上制墨之路,凭借(jiè )天资和努力惊艳沉(chén )寂已久的徽州墨业(yè ),而后以女子之身突(tū )破束缚,以墨为刃,重(chóng )塑徽州墨业辉煌(huáng ),振(zhèn )兴百年家族,再造(zào )千(qiān )年徽墨光彩。